Method and a network for transmitting local and global radio cal

Details Method and a network for transmitting local and global radio cal Method and a network for transmitting local and global radio cal

1994-10-17

1997-01-28

Zimmerman, Brian

Communications: electrical

Continuously variable indicating

With meter reading

34082544, 370528, 455 381, H04Q 100

Patent

active

055981488

ABSTRACT:
A paging network having a master transmitter and several local radio transmitters is disclosed. The network is designed to allow the transmission of local and global messages. Global messages must be sent by all radio transmitters synchronously. Local messages are only sent by a single radio transmitter. The master transmitter generates a signal that contains the global messages and sends it to the radio transmitters. If a radio transmitter has no local messages to be sent, it emits the unchanged signal received from the master transmitter. If a radio transmitter has one or more local messages to be added to the signal, it will determine if there are suitable gaps in the signal received from the master transmitter where the local messages can be included. If such gaps are found, the local messages are added to the signal to generate a modified signal which is then emitted by the radio transmitter. In order to allow a forward recognition of gaps in the signal sent by the master transmitter, special gap markers or allocation messages can be added. The proposed method makes it easy to exploit the capacity of the available radio channel.

REFERENCES:
patent: 3995120 (1976-11-01), Pachynski
patent: 4937820 (1990-06-01), Kawula
patent: 5168271 (1992-12-01), Hoff
patent: 5265033 (1993-11-01), Vajk
patent: 5285199 (1994-02-01), Pocek

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